19-letter words containing o, n, f, r
- cerebrospinal fluid — the clear colourless fluid in the spaces inside and around the spinal cord and brain
- chlorofluorocarbons — Plural form of chlorofluorocarbon.
- chlorofluoromethane — any of a series of gaseous or volatile methanes substituted with chlorine and fluorine and containing little or no hydrogen: used as refrigerants and, formerly, as aerosol propellants until scientists became concerned about depletion of the atmospheric ozone layer.
- chlorosulfonic acid — a colorless or yellowish, highly corrosive, pungent liquid, HClO 3 S, usually produced by treating sulfur trioxide with hydrogen chloride: used in organic synthesis to introduce the sulfonyl chloride group, =SO 2 Cl.
- circle of confusion — a circular spot on a film, resulting from the degree to which a pencil of light reflected from the field of view is focused in front of or behind the film, or from aberration of the lens, or from both.
- circular definition — a definition in which the definiendum (the expression being defined) or a variant of it appears in the definiens (the expression that defines it).
- city of westminster — a borough of Greater London, on the River Thames: contains the Houses of Parliament, Westminster Abbey, and Buckingham Palace. Pop: 222 000 (2003 est). Area: 22 sq km (8 sq miles)
- coefficient of drag — the ratio of the drag on a body moving through air to the product of the velocity and surface area of the body.
- command performance — A command performance is a special performance of a play or show which is given for a head of state.
- comminuted fracture — a fracture in which the bone is splintered or fragmented
- confectioner's shop — a sweet shop
- confederate jasmine — star jasmine.
- confidence interval — an interval of values bounded by confidence limits within which the true value of a population parameter is stated to lie with a specified probability
- confocal microscope — a light microscope with an optical system designed to reject background from matter outside the focal plane and therefore allowing images of different sections of a specimen to be obtained
- consumer confidence — If there is consumer confidence, people generally are willing to spend money and buy things.
- contributing factor — something that is partly responsible for a development or phenomenon
- corrections officer — A corrections officer is someone who works as a guard at a prison.
- corruption of blood — the impurity before law that results from attainder and disqualifies the attainted person from inheriting, retaining, or bequeathing lands or interests in lands: abolished in 1870.
- counter reformation — the movement within the Roman Catholic Church that followed the Protestant Reformation of the 16th century.
- counter-reformation — the reform movement of the Roman Catholic Church in the 16th and early 17th centuries considered as a reaction to the Protestant Reformation
- countertransference — in psychotherapy, transference in which the psychoanalyst or other psychotherapist substitutes the client for the original object of his or her own repressed impulses
- craters of the moon — a national monument in S Idaho: site of scenic lava-flow formations.
- creeping cinquefoil — any of several plants belonging to the genus Potentilla, of the rose family, having yellow, red, or white five-petaled flowers, as P. reptans (creeping cinquefoil) of the Old World, or P. argentea (silvery cinquefoil) of North America.
- cross one's fingers — to fold one finger across another in the hope of bringing good luck
- cross-channel ferry — a ferry that transports passengers and vehicles across the English Channel
- cross-fertilization — fertilization by the fusion of male and female gametes from different individuals of the same species
- cult of personality — a cult promoting adulation of a living national leader or public figure, as one encouraged by Stalin to extend his power.
- current transformer — A current transformer is a transformer that is designed to give an accurate current ratio for the purpose of measurement and control.
- customer preference — Customer preference is what type of product an individual customer likes and dislikes.
- cyril of alexandria — Saint. ?375–444 ad, Christian theologian and patriarch of Alexandria. Feast day: June 27 or June 9
- declaration of love — a statement made by one person to another in which they say they are in love with the other person
- deflate compression — deflate
- deflationary spiral — Geometry. a plane curve generated by a point moving around a fixed point while constantly receding from or approaching it.
- department of labor — the department of the U.S. federal government that promotes and improves the welfare, opportunities, and working conditions of wage earners. Abbreviation: DOL.
- department of state — the department of the U.S. federal government that sets forth and maintains the foreign policy of the U.S., especially in negotiations with foreign governments and international organizations. Abbreviation: DOS.
- dependable software — software reliability
- dereliction of duty — Dereliction of duty is deliberate or accidental failure to do what you should do as part of your job.
- diamond ring effect — a phenomenon, sometimes observed immediately before and after a total eclipse of the sun, in which one of Baily's beads is much brighter than the others, resembling a diamond ring around the moon.
- diamond-leaf laurel — a tree, Pittosporum rhombifolium, of Australia, having coarsely toothed, oval or diamond-shaped leaves and white flowers, widely planted as an ornamental in the southwestern U.S.
- dictionary of names — a dictionary of given names that indicates whether a name is usually male, female, or unisex and often includes origins as well as meanings; for example, as by indicating that Evangeline, meaning “good news,” comes from Greek. Used primarily as an aid in selecting a name for a baby, dictionaries of names may also include lists of famous people who have shared a name and information about its current popularity ranking.
- difference equation — (mathematics) A relation between consecutive elements of a sequence. The first difference is D u(n) = u(n+1) - u(n) where u(n) is the nth element of sequence u. The second difference is u(n+2) + a u(n+1) + b u(n) = 0 can be converted to a difference equation (in this case, a second order linear difference equation): D2 u(n) + p D u(n) + q u(n) = 0 and vice versa. a, b, p, q are constants.
- diffraction grating — a band of equidistant, parallel lines, usually more than 5000 per inch (2000 per centimeter), ruled on a glass or polished metal surface for diffracting light to produce optical spectra.
- diffraction pattern — the phenomenon exhibited by wave fronts that, passing the edge of an opaque body, are modulated, thereby causing a redistribution of energy within the front: it is detectable in light waves by the presence of a pattern of closely spaced dark and light bands (diffraction pattern) at the edge of a shadow.
- do well for oneself — to thrive or succeed
- doctrine of descent — the theory that animals and plants arose by descent from previously existing organisms; theory of evolution
- draw someone's fire — to attract the criticism or censure of someone
- drink the health of — to salute or celebrate with a toast
- elastic deformation — In elastic deformation a material changes shape when a stress is applied to it but goes back to its original state when the stress is removed.
- end of transmission — (character) (EOT) The mnemonic for ASCII character 4.
- engineering factory — a factory where engineering products are made